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Common Unit Repurchase and Retirement (Tables) | 9 Months Ended
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Jun. 30, 2012
Common Unit Repurchase and Retirement [Abstract] |
Partnership's repurchase activities | (in thousands, except per unit amounts)
Period |  | Total Number of Units Purchased as Part of a Publicly Announced Plan or Program |  |  | Average Price Paid per Unit (b) |  |  | Maximum Number of Units that May Yet Be Purchased Under the Plan II Program |
Plan II—Number of units authorized (a) |  |  |  |  |  |  |  |  |  |  | 7,250 |
Plan II—Fiscal year 2010 total |  |  | 1,197 |  |  | $ | 4.44 |  |  |  | 6,053 |
Plan II—Fiscal year 2011 total (c) |  |  | 2,108 |  |  | $ | 5.19 |  |  |  | 3,945 |
Plan II—October 2011 |  |  | 226 |  |  | $ | 4.96 |  |  |  | 3,719 |
Plan II—November 2011 |  |  | 215 |  |  | $ | 4.95 |  |  |  | 3,504 |
Plan II—December 2011 (d) |  |  | 2,007 |  |  | $ | 5.21 |  |  |  | 1,497 |
Plan II—First quarter fiscal year 2012 total |  |  | 2,448 |  |  | $ | 5.17 |  |  |  | 1,497 |
Plan II—January 2012 |  |  | 1,220 |  |  | $ | 4.63 |  |  |  | 277 |
Plan II—February 2012 |  |  | 277 |  |  | $ | 4.54 |  |  |  | — |
Plan II—Second quarter fiscal year 2012 total |  |  | 1,497 |  |  | $ | 4.62 |  |  |  | — |
Plan II—Total number of units repurchased |  |  | 7,250 |  |  | $ | 4.94 |  |  |  | — |
(a) | In July 2010, the BOD authorized 7.0 million common units for repurchase. In December 2011, the BOD authorized an additional 250 thousand common units for repurchase.
(b) | Amounts include repurchase costs.
(c) | Fiscal year 2011 common unit repurchase include 1.5 million common units acquired in a private sale.
(d) | December 2011 common unit repurchase include 1.75 million common units acquired in a private sale.

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